Lung cancer brain metastases do gamma knife treatment or have a certain effect, but it must be clear that once the metastatic tumors, most of them are malignant tumors, and sometimes not only metastatic to the brain, may also be metastatic to other parts of the body, before doing gamma knife must improve the corresponding examination, there may be other parts of the tumor cells remain. Another important point is that the role of Gamma Knife is very limited and can only play a relative remission role and not a complete cure. For lung cancer brain metastasis, it is better to use a series of examinations and treatments such as surgery, gamma knife and chemotherapy to better relieve the disease.